Highest temperature in Madrid on July 12?

Platform comparison

Market context

Madrid is currently experiencing an intense summer heatwave that has pushed temperatures well above seasonal averages across central Spain, with the city on an official heat alert as authorities warn of dangerous afternoon conditions. This extreme weather pattern, which saw daytime temperatures reach 42°C on 5 July and 6 July, frames the context for the 12 July settlement, where the crowd-implied probability of any specific outcome sits at 0% despite the active heat event.

Historical data from July 2026 shows daily high temperatures in Madrid ranging from 89°F to 102°F (approximately 32°C to 39°C), with the average high for the month sitting at 95°F (35°C) [1]. The recent record-breaking peak of 42°C in early July, described as pushing the limits of what the city has experienced in recent years, suggests that while extreme heat is dominant, the specific 12 July reading remains uncertain within the broader heatwave window [2]. The first six months of 2026 were already Spain’s hottest ever recorded, with temperatures 1.6°C above normal levels, reinforcing the likelihood of continued high readings [9].

Traders should monitor the official heat alert status and emergency service warnings, which remain high as authorities expect heat to stay above 40°C until at least 7 July, though the duration beyond this point is the key dependency for the 12 July outcome [2]. The resolution source is Wunderground data for the Adolfo Suárez Madrid-Barajas Airport Station, meaning traders must watch for any official updates on the heatwave’s persistence or weakening as the settlement window closes at 12:00 UTC on 12 July [2]. No scheduled political debates or campaign-finance disclosures directly influence this weather event, making the meteorological forecast the sole catalyst.

Sources: 1 · 2 · 3 · 4 · 5

Methodology

This page tracks Highest temperature in Madrid on July 12? across four political prediction venues. Live odds come from the Polymarket order book (the deepest political prediction-market book). Kalshi is the CFTC-regulated US alternative, Betfair the established UK sports-exchange with politics markets, Manifold the open play-money variant. For users geo-blocked from Polymarket directly, brokers like Election Predictions UK provide a 0%-fee route into the same order book.

Resolution & payout

Political markets typically settle on official candidate or agency confirmation. Polymarket uses UMA Optimistic Oracle: a proposer posts the outcome with a bond, the two-hour window opens, then the smart contract pays USDC.

Kalshi settles USD via CFTC clearinghouse, with clearly defined resolution sources (e.g. AP race calls for elections). Betfair settles after the official outcome is registered with the league or agency. Manifold is play-money.

FAQ

How accurate are political prediction markets?

Historically more accurate than polls. Polymarket's Brier score on US 2024 elections was ~0.11 — better than 538 (~0.14) and every mainstream poll. Markets aggregate information with real skin in the game.

Can prediction markets influence election outcomes?

Markets reflect expectations rather than create them. Studies show public-facing markets can anchor expectations, but don't influence the underlying outcome. Political markets are information, not advocacy.

Which platform has the deepest political liquidity?

Polymarket — by far. US 2024 presidential volume was ~$3.5B vs Kalshi (~$200M) and Betfair (~$120M). Where Polymarket is geo-blocked, brokers like Election Predictions UK route into the same order book at 0% fees.

Are political prediction markets legal in my country?

It varies. They sit in legal gray areas in most jurisdictions. Polymarket is geo-blocked from US/UK/EU; some broker frontends have a different geo footprint. Trade only with capital you can afford to lose, and only if you understand the legal status in your jurisdiction.

Which political events have the biggest volume?

US Presidential election, party nominations (DNC/RNC), Senate majorities, individual state outcomes (Pennsylvania, Michigan, Wisconsin), and major European elections. Peak markets reach $50-500M per event.